Question: What is the 15.0 toluene exposure limit?
Paraphrase: What is the exposure limit for 15.0 toluene?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q15779 p:P2407 ?s . ?s ps:P2407 ?obj . ?s pq:P2047 ?x filter(contains(?x , '15.0')) }